[TowerTalk] US Tower Corp Warranty Info Needed

I bought an MD-75 Motor from US Towers back in Nov. It was for a Hygain 70'
Tower. They used to supply the motors for Hygain. When I got it, the
mounting holes had been drilled wrong. I sent them drawing and digital pix
to prove my point. I also had to hire somebody to re-drill the holes since I
didn't have the tools.
They just ignored me. I have since given up. But now the motor doesn't work
at all! I'm afraid they won't cover me on my warranty either. Does anybody
have any advice?
Your help is appreciated.
73,
Ed NI6S